Single crystal metal-organic framework constructed by vertically self-pillared nanosheets and its derivative for oriented lithium plating

This vertically self-pillared (VSP) structure extends the application range of traditional porous materials with facile mass/ion transport and enhanced reaction kinetics. Here, we prepare a single crystal metal-organic framework (MOF), employing ZIF-67 as proof concept, which is constructed by nanosheets (VSP-MOF). We further converted VSP-MOF into VSP-cobalt sulfide (VSP-CoS2) through sulfidation process. Catalysis plays an important role in almost all battery technologies; for metallic batteries, lithium anodes exhibit high theoretical specific capacity, low density, redox potential. However, during half-cell (Li++e=Li), uncontrolled dendritic Li penetrates separator solid electrolyte interphase layer. When employed composite scaffold metal deposition, there are many advantage to using this framework: 1) VSP-CoS2 substrate provides surface area dissipate ion flux mass transfer acts pre-catalyst, 2) catalytic Co center favors charge process preferentially binds Li+ electrical fields, 3) VSP guides propagation along nanosheet 2D orientation without protrusive dendrites. All these features enable batteries encouraging performances.